Song Yunhui (played by Wang Kai) is talented, but he has a bad background and has always been discriminated against. However, he seized the opportunity of the resumption of the college entrance examination in 1978, seized the opportunity, worked hard, became a technician in a state-owned enterprise, and was promoted step by step, laying the foundation for a successful life, but he was gradually lost in the changes of the new era. Unlike Song Yunhui is his brother-in-law Lei Dongbao (played by Yang Shuo). He was born in a poor family and is a "big rough" with a red seedling. He is full of action. In the wave of rural reform, he led the villagers to keep up with the policy and has been at the forefront of the times. However, due to his low cultural level and lack of broad vision, he eventually stumbled under the feet of new things. If the experience of Song Yunhui and Lei Dongbao is a microcosm of the state-owned economy and the collective economy. Then the self-employed Yang Xun (played by Dong Zijian) is undoubtedly a typical representative of the individual economy. In the era of rolling forward, he has seized business opportunities and stepped on traps. After several twists and turns in the business field, he finally owned his own industry and became a typical representative of the individual economy of that era.